Ambegaonkar Jatin P, Redmond Charles J, Winter Christa, Cortes Nelson, Ambegaonkar Shruti J, Thompson Brian, Guyer Susan M
Sports Medicine Assessment Research and Testing Laboratory, George Mason University, Manassas, VA 20110, USA.
Foot Ankle Spec. 2011 Dec;4(6):354-60. doi: 10.1177/1938640011428509.
Ankle stabilizers can reduce ankle sprain incidence and severity by limiting range of motion. Still whether using them affects performance remains unclear. The authors compared effects of 3 ankle stabilizers, tape, lace-up (Swede-O Ankle Lok), and semirigid (Air-Cast Air-Stirrup) braces, and a nonsupport control on vertical jump (Sargent Jump Test), agility (Right-Boomerang Run test), and dynamic balance (Modified Bass Test) in 10 volunteers (4 males, 6 females; 25.6 ± 2.8 years, 167.8 ± 13.7 cm, 61.4 ± 10.7 kg) using repeated-measures ANOVAs. Participants had similar vertical jump (P = .27; control = 41.40 ± 11.89 cm, tape = 37.90 ± 7.92 cm, Swede-O = 41.40 ± 11.89 cm, Air-Cast = 39.29 ± 10.85 cm) and dynamic balance (P = .08; control = 92.50 ± 2.46, tape = 91.55 ± 3.53, Swede-O = 97.00 ± 5.32, Air-Cast = 89.40 ± 6.08) but differing agility scores (P = .03; control = 13.55 ± 1.35 seconds, tape = 14.03 ± 1.5 seconds, Swede-O = 14.10 ± 1.36 seconds, Air-Cast = 14.14 ± 1.41 seconds). Post hoc tests revealed a significant difference (P = .03) between control and Air-Cast but not between Swede-O (P = .06) or tape (P = .07). Effect size (d) analyses indicated that compared with control, all stabilizers trended to increase agility run times (tape, d = 0.33; Swede-O, d = 0.40; Air-Cast, d = 0.43). Since participants primarily required sagittal plane motion when jumping vertically and had relatively slow directional changes in the dynamic balance test, wearing ankle stabilizers did not hamper jump or balance. However, ankle stabilizers hindered participants' ability to perform quick directional changes required in the agility test, with the most rigid stabilizer (Air-Cast) affecting agility the most. Clinicians should be aware that ankle stabilizers may affect some performance measures (agility) but not others (jumping, balance) and continue examinations in larger cohorts.
Therapeutic, Level II.
脚踝稳定器可通过限制活动范围来降低脚踝扭伤的发生率和严重程度。然而，使用它们是否会影响运动表现仍不明确。作者使用重复测量方差分析，比较了三种脚踝稳定器（胶带、系带式[瑞典脚踝固定器]和半刚性[空气石膏空气支撑护具]护具）以及无支撑对照组对10名志愿者（4名男性，6名女性；年龄25.6±2.8岁，身高167.8±13.7厘米，体重61.4±10.7千克）垂直跳跃（萨金特纵跳测试）、敏捷性（右回旋镖跑测试）和动态平衡（改良巴斯测试）的影响。参与者的垂直跳跃成绩（P = 0.27；对照组=41.40±11.89厘米，胶带组=37.90±7.92厘米，瑞典脚踝固定器组=41.40±11.89厘米，空气石膏空气支撑护具组=39.29±10.85厘米）和动态平衡成绩（P = 0.08；对照组=92.50±2.46，胶带组=91.55±3.53，瑞典脚踝固定器组=97.00±5.32，空气石膏空气支撑护具组=89.40±6.08）相似，但敏捷性得分不同（P = 0.03；对照组=13.55±1.35秒，胶带组=14.03±1.5秒，瑞典脚踝固定器组=14.10±1.36秒，空气石膏空气支撑护具组=14.14±1.41秒）。事后检验显示，对照组与空气石膏空气支撑护具组之间存在显著差异（P = 0.03），而瑞典脚踝固定器组（P = 0.06）或胶带组（P = 0.07）之间无显著差异。效应量（d）分析表明，与对照组相比，所有稳定器都有增加敏捷性跑时间的趋势（胶带组，d = 0.33；瑞典脚踝固定器组，d = 0.40；空气石膏空气支撑护具组，d = 0.43）。由于参与者在垂直跳跃时主要需要矢状面运动，且在动态平衡测试中的方向变化相对较慢，因此佩戴脚踝稳定器不会妨碍跳跃或平衡。然而，脚踝稳定器会阻碍参与者在敏捷性测试中进行快速方向变化的能力，其中最刚性的稳定器（空气石膏空气支撑护具）对敏捷性的影响最大。临床医生应意识到，脚踝稳定器可能会影响某些运动表现指标（敏捷性），但不会影响其他指标（跳跃、平衡），并应继续在更大的队列中进行研究。
治疗性，二级。
